论文标题
从伊斯坦布尔大学天文台发现了一个短期脉动器
Discovery of a Short Period Pulsator from Istanbul University Observatory
论文作者
论文摘要
我们报告了在系外行星宿主星XO-2领域发现了新的短期脉动变量。在将其用作比较恒星时已确定变量。为了验证候选人的可变性，进行了后续计划。多带光曲线的周期分析显示，非常突出且一致的脉动周期性为$ p \ sim0.95 $小时。给定可变性周期，振幅和颜色索引，对象很可能是\ emph {delta scuti}类型变量。绝对幅度（$ m_ {v} $）和颜色索引$（b-v）_ {0} $分别确定为$ 2.76 $和$ 0.22 $。恒星的$（b-v）_ {0} $对应于A7光谱类型，近似有效温度为7725K。时间序列数据的机器学习分析也表明，该对象是可变类型的DSCT，概率为78 \％。
We report the discovery of a new short period pulsating variable in the field of exoplanet host star XO-2. Variable has been identified while it was being used as a comparison star. In order to verify the variability of the candidate, a follow-up program was carried out. Period analysis of multi-band light curves revealed a very prominent and consistent pulsation periodicity of $P\sim0.95$ hours. Given the variability period, amplitude and the color index, the object is most likely a \emph{Delta Scuti} type variable. Absolute magnitude ($M_{v}$) and the color index $(B-V)_{0}$ of the star determined as $2.76$ and $0.22$, respectively. This $(B-V)_{0}$ of the star corresponds to A7 spectral type with an approximate effective temperature of 7725 K. Machine-learning analysis of the time-series data also revealed that the object is of variable type DSCT with a probability of 78\%.
